The VerdictGuitar Hero: Metallica is a big offering on any console. The biggest differences are the lower level of visual detail, animations, and sound quality on Wii and PS2. The bulk of the game content is identical in all four versions of the game, but the character creator and Music Studio mode offer fewer options on the Wii version, and the PS2 lacks the Music Studio entirely. The real issue is how much do you care about sound quality and added options in the music studio? If either of these will be deal breakers, then the PS3 and 360 versions should be your choice. If you just want to bang your head with some friends for a few hours all three versions will do the trick. Even then, the sound quality on the PS3 and 360 versions add some extra punch that Metal Militia diehards will appreciate.